pembroke

Hi folks.
Long time, no post!
I have recently found another photo of my grandfather, Charles Howe (joined the RN in 1911 at HMS Pembroke) who is (standing, right) in this photo... I am curious to know what the uniform is that the man sitting down is wearing.
Any contribution gratefully...

Hi all.
Haven't posted for a while, but would be grateful for some help please, identifying a very small object which has passed down to me.
My only Navy connection is that my grand-father joined at Chatham in 1911 and was discharged in 1930 something, but was recalled for the war, and died in...